Ambari Managed HDF Upgrade
Also available as:

Verifying Symbolic Links for SAM and Schema Registry

After you register and install your target version, but before you proceed with an Express Upgrade, verify that the symbolic links to the SAM and Schema Registry configuration directories on each host are still valid. If the links are not valid, fix them before upgrading.

  1. Confirm on each host running Registry or SAM that symlinks for the configuration directories are still valid.
    #For Schema Registry
    ls -l /etc/registry/conf
    #For SAM
    ls -l /etc/streamline/conf
  2. If the link appears to be broken, perform the following steps to fix it.